function createCookie(name,value,days)
		{
			 if (days)
			 {
				var date = new Date();
				date.setTime(date.getTime()+(days*60*60*1000));
				var expires = "; expires="+date.toGMTString();
			 }
			 else var expires = "";
			 document.cookie = name+"="+value+expires+"; path=/";
		}
		
	function readCookie(name)
	{
		 var nameEQ = name + "=";
		 var ca = document.cookie.split(';');
		 for(var i=0;i < ca.length;i++)
		 {
				var c = ca[i];
				while (c.charAt(0)==' ') c = c.substring(1,c.length);
				if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
		 }
		 return null;
	}
	
	function eraseCookie(name)
	{
		 createCookie(name,"",-1);
	}